JP2003289637A - Armature of rotary-electric machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a low-cost and reliable motor where the space factor of winding is high. <P>SOLUTION: An armature for a rotary-electric machine is provided, which is equipped with a rotary shaft, a stacked core having the rotary shaft inserted therein, a boss part covering the end of the stacked core and retaining the rotary shaft at the center, a wall-shaped rib elongating in the direction of the rotary shaft on the outside periphery side, an insulating plate having a projection for induction of winding molded integrally on the surface of the tooth part between the boss part and the rib so that the windings cross substantially equally in the radial direction, and the windings are wound several times in the slot part of the stacked core. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an armature structure for a rotary electric machine.

[0002]

2. Description of the Related Art Conventionally, a rotor of a motor has a rotary shaft inserted through a laminated core, and an insulating plate having substantially the same shape as the outer shape of the core, that is, an insulator, is attached to the end surface of the core of the motor armature. A winding is wound around the slot of the laminated core. By the way, when the winding is wound a certain number of times in the slot, the coil feeding tip of a winding device (not shown) is wound at the time of winding so that the wound winding is evenly arranged in a predetermined slot winding portion. The winding shape was evenly arranged by reciprocating a fixed amount. However, on the other hand,
Not only does the operation of the winding device become complicated and the cost of the device rises, but sometimes the centrifugal force of the operation causes the winding to jump out to the outside of the rotor in the circumferential direction, and when the motor rotates, the winding contacts the stator. There was also a risk of disconnection. As shown in FIGS. 6, 7, and 8, when the winding is wound using a winding device that does not reciprocate and the coil delivery tip position of the winding device is constant, the winding position of the winding is The windings which are concentrated in a specific place and are sequentially wound from above generate winding collapse due to the tension during winding, the windings are sparsely wound, and the space factor becomes low. As a means for solving this, in Japanese Utility Model Laid-Open No. 60-86047, an end surface of an insulating plate is provided with an inclined projection having an inclined surface whose height decreases toward the axial center of the rotor, and is wound. A structure is disclosed in which the winding is slid on an inclined surface and the winding positions are made uniform so that the winding positions are not concentrated at specific points.
However, in this structure, the winding does not slip depending on the inclination angle, and when trying to slip the winding, the inclination angle must be increased, not only the amount of resin used increases, but also the winding height increases. There was a possibility that the armature as the rotor would still contact the stator.

The present invention has been made in order to solve the above-mentioned problems, and provides a rotating electric machine having a high space factor, a low cost and a high reliability without complicating the operation of the winding device. To provide an armature.

[0004]

In order to solve the above problems, the invention according to claim 1 covers the rotating shaft, the laminated core into which the rotating shaft is inserted, the end face of the laminated core, and the central portion. The boss that holds the rotating shaft, the wall-shaped rib that extends in the direction of the rotating shaft on the outer peripheral side, and the tooth surface between the boss and the rib that guides the winding so that the winding extends substantially uniformly The gist of the present invention is an armature of a rotating electric machine, comprising: an insulating plate integrally formed with a projection for use; and a winding wound a plurality of times around a slot portion of a laminated core.

A second aspect of the present invention is characterized in that, in the armature structure for a rotary electric machine according to the first aspect, the winding guide projections are formed in a smooth, substantially semicircular shape.

A third aspect of the present invention is characterized in that, in the armature structure for a rotating electric machine according to the first aspect, the winding guiding protrusion is formed in a conical shape.

(Operation) According to the invention described in claims 1 to 3, particularly the initial winding wound is slipped on the surface of the protrusion,
The protrusions are distributed radially inward (rotating shaft side) and radially outward of the protrusions, and the winding positions are substantially uniform.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to FIGS. FIG. 1 shows a hemispherical protrusion 2 integrally formed on the tooth surface of a resin insulator 1.
An example with is shown. Reference numeral 3 is a rib for preventing the wire from fraying and for connecting and connecting the respective conductors. The ribs 3 are formed on both of the insulators 1 provided on both end surfaces of the laminated core 6 so as to stand in the rotation axis direction and extend. In this example,
The rotor is a three-phase type, the rotary shaft 5 is inserted in the central portion, and a commutator (not shown) is attached to one end of the rotary shaft 5.
The rotary shaft 5 has a laminated core 6 in which a plurality of cores are laminated, and both end surfaces thereof are covered with a resin insulator 1. Although not shown in this figure in this state, the winding is wound a plurality of times. A hemispherical protrusion 2 is integrally formed on a portion of the insulator 1 corresponding to the tooth portion 7 of the laminated core 6. A boss 4 holds a rotating shaft and a commutator segment (not shown). These protrusions 2 are formed on the tooth portion 7 between the rib 3 and the boss portion 4.

FIG. 2 shows a state in which the winding 8 is wound around the slot of the laminated core 6 covered with the insulator 1 integrally formed with the hemispherical projection 2. A winding feed-out tip of a winding device (not shown) is arranged in a tangential direction with the hemispherical protrusion 2 as an apex, and the delivered winding 8 slides around the apex of the hemispherical protrusion 2 as a center. In FIG. 2, the winding positions are distributed on the left and right sides, that is, on the radially inner side (rotating shaft side) and on the radially outer side (rib side), and the winding positions are wound substantially evenly on the left and right.

FIG. 3 shows a state in which the winding 8 is further wound, and FIG. 4 shows a state in which the winding 8 is wound to almost the final stage. If it is wound substantially evenly on the left and right at the stage of FIG. 2, it will be stably and substantially evenly wound relatively thereafter. Although the position of the leading end of the winding device of the winding device is constant, since the substantially hemispherical protrusion 2 is formed in the slot portion, the winding 8 slides at the time of winding and is roughly evenly moved to the left and right. Line breakage is small and the space factor is improved. Since it is a projection with a substantially hemispherical shape rather than a gentle inclination as in the past, when the winding is wound in the initial stage, it is smoothly distributed to the left and right when it comes into contact with the projection, Is smoothly wound with a high space factor. The protrusion is integrally formed on the surface of the tooth portion 7 between the boss portion 4 and the rib 3.

FIG. 5 shows a modification of the protrusion. This example is also similar in that the cross section has a triangular conical shape and slides radially inward and outward (left and right in this figure) with the apex of the projection 9 as a boundary.

In this embodiment, since the operation of the winding device can be simplified, the processing cost can be reduced, and the protrusion shape can be integrally molded with the insulator by resin molding, so that a small motor with low cost and high reliability can be obtained. It becomes possible.

[Brief description of drawings]

FIG. 1 is a plan view of an insulator of the present invention.

FIG. 2 is a sectional view showing an initial winding state according to the first embodiment of the present invention.

FIG. 3 is a sectional view showing a middle winding state of the winding in the first embodiment of the present invention.

FIG. 4 is a sectional view showing a final winding state in the first embodiment of the present invention.

FIG. 5 is a sectional view showing a second embodiment of the present invention.

FIG. 6 is a cross-sectional view showing an initial winding state according to a conventional technique.

FIG. 7 is a cross-sectional view showing a middle winding state of winding according to a conventional technique.

FIG. 8 is a cross-sectional view showing a final winding state in a conventional technique.

[Explanation of symbols]

1 ... Insulator, 2 ... Hemispherical protrusion, 3 ... Rib,
4 ... Boss portion, 5 ... Rotating shaft, 6 ... Laminated core, 7 ... Teeth portion, 8 ... Winding, 9 ... Conical projection

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 5H002 AB08                 5H603 AA09 BB01 BB04 BB12 CA02                       CA05 CB01 CB12 CB18 CB26                       CC11 CC17 CD21 CE01                 5H604 AA08 BB01 BB07 BB12 BB14                       CC02 CC05 CC16 PB03

Claims (3)

[Claims] 1. A rotating shaft, a laminated core into which the rotating shaft is inserted, a boss portion that covers an end face of the laminated core and holds the rotating shaft at a central portion, and extends in the rotating shaft direction on the outer peripheral side. A wall-shaped rib, an insulating plate integrally formed with a winding-inducing protrusion on the surface of the tooth portion between the boss and the rib so that the winding extends substantially uniformly in the radial direction; An armature for a rotating electric machine, comprising: a winding wound around a slot portion a plurality of times; 2. The armature structure for a rotary electric machine according to claim 1, wherein the winding guiding protrusion is formed in a smooth substantially hemispherical shape. 3. The armature structure for a rotary electric machine according to claim 1, wherein the winding guiding protrusion is formed in a conical shape.